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Reduce inode lock group count to 128, from 1024

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The number of inodes that each inode group lock covers is a balance
between minimizing lock overhead and contention.  With 128 inodes per
lock we're still doing quite a bit of bulk creates, finds, etc, per lock
but could reduce the risk of contention a bit.  Let's see how it works
out.

Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2021-05-05 14:41:36 -07:00
parent c66f2e0a0e
commit e6889b1882
1 changed files with 3 additions and 3 deletions
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6
kmod/src/format.h
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@@ -757,9 +757,9 @@ enum scoutfs_dentry_type {
DIV_ROUND_UP(sizeof(struct scoutfs_xattr) + name_len + val_len, \
(unsigned int)SCOUTFS_XATTR_MAX_PART_SIZE)
#define SCOUTFS_LOCK_INODE_GROUP_NR 1024
#define SCOUTFS_LOCK_INODE_GROUP_NR 128
#define SCOUTFS_LOCK_INODE_GROUP_MASK (SCOUTFS_LOCK_INODE_GROUP_NR - 1)
#define SCOUTFS_LOCK_SEQ_GROUP_MASK ((1ULL << 10) - 1)
#define SCOUTFS_LOCK_SEQ_GROUP_MASK ((1ULL << 7) - 1)
/*
* messages over the wire.
@@ -961,7 +961,7 @@ enum scoutfs_corruption_sources {
#define SC_NR_LONGS DIV_ROUND_UP(SC_NR_SOURCES, BITS_PER_LONG)
#define SCOUTFS_OPEN_INO_MAP_SHIFT 10
#define SCOUTFS_OPEN_INO_MAP_SHIFT 7
#define SCOUTFS_OPEN_INO_MAP_BITS (1 << SCOUTFS_OPEN_INO_MAP_SHIFT)
#define SCOUTFS_OPEN_INO_MAP_MASK (SCOUTFS_OPEN_INO_MAP_BITS - 1)
#define SCOUTFS_OPEN_INO_MAP_LE64S (SCOUTFS_OPEN_INO_MAP_BITS / 64)